Mold for forming sunken concrete structures.



R. H. BOLEN. MOLD FOR FORMING SUNKEN CONCRETE STRUCTURES.

APPLICATION FILED SEPT.18,113.

Patgnted Mar. 3, 1914.

22' SHEETS-SHEET 1.

R. H. BOLEN.

MOLD FOR. FORMING SUNKEN CONCRETE STRUCTURES. I APPLICATION FILEDSBPT.18,1913.

Patented Mar. 3, 1914.

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entrain SATES orinon.

ROBERT H. BOLEN, OF NEW ORLEANS, LOUISIANA.

Specification of Letters Patent.

Patented Mar. 3, 1914.

Application fittedScptember 18, 1913. Serial No. 790,443.

Fl) all 112 cm it may concern.

le it known that I, ROBERT HART BOLEN, citizen of the United States,residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented new and useful Improvements in Molds forForming Sunken Concrete Structures, of which the followin is aspecification.

The invention relates to the construction of concrete walls; and it hasfor one of its obj-cots to simplify and cheapen the cost of constructionof this type of wall.

Another object of the invention is to pro vide a novelly-constructedhollow pile, which can be driven into the ground, and which, when filledwith concrete, may be readily withdrawn and again driven, filled withconcrete, and withdrawn, the operationbe ing repeated until the requiredlength of wall has been constructed.

Still another object of the invention is to provide for the constructionof circular and angular walls.

1n the drawings-Figure 1 is a perspec live view of my improved pile Fig.2, a transverse, longitudinal section of the same; Fig. 3, a horizontal,transverse section through the upper end of the pile and thedriving-box; Fig. 4, a top plan view of a series of the pilesinterlocked together; Fig. 5, perspective view of the driving-box; Fig.6, a similar View of one of the hook shape guides; Fig. 7, a horizontalsection through the upper end, and driving-box of a modified form ofpile; Fig. 8, a similar section through the lower end of the same, andFig. 9 a plan view of a detachable bottom for the modified pile. Fig. isa plan viewof the bottom portion of the structure shown in Fig. 1.

Referring to the several views, the numerals l and 2 indicatechannel-irons, preferably of steel, which form the respective sides ofthe pile. These two channel-irons are spaced apartany suitable orrequired distance, with their flanges extending outwardly, and are heldapart by sleeves 3, 3, ihrough which pass bolts 4 for securing the aidestogether. Situated at the top of the )ile within the space between thetwo sides,

improved pile, the first. pile s a driving-box 5, firmly bolted orriveted o the respective sides. This driving-box very much shorter thanthe space length :etwccn the sides, so as to leave sufficient pace ateach side thereof for the entrance 1 the concrete. Each of the flangesat one edge of the pile is provided with hook-shape guides 6, (3, whichare firmly boltcd or riveted to the flanges, and serve to guide all adjaceut pile while being driven. For convenience of description, thisedge of the pile will be hereinafter referred to asthe female face, theopposite edge will be referred to as the male face. The inner corners ofthe flanges of the male face are provided with ltn gitudinal dove-tailgrooves 7, 7, and slidaliver-ranged in these grooves is a maleprotector-plate 8, provided atfils upper end with a hole 9 in which aline or rope may be fastened to withdraw the plate when required. Thelower .end of the pile is provided with a bottom 10 hinged at one sideas shown in Figs. 1 and 2, theopposite sidebcing providedwith shortstuds or projections 11, 11 which enter slots 12, 12 in the bottom, andserve to retain said bottom in position in starting the drivingof thepile. The lower ends of the flanges" are beveled or inclined tofacilitate driving.

In the coustrm-tion of a wall, using my to be driven should be providedwith male and female protector-plates, the latter plate 18, being slidinto the guides 6, 6, and is left in place to form the end of the wall.Thcsecond pile with male protectorplatcs in place, as shown in Fig. 4,is then Cll.l"(3ll. l3l1 flanges of the male face being in the,g uideS6, 6. After the second pile has con driven, the male protector-plate iswitl1,cl1':1w11 from the first pile driven, leaving a clear space between the end female protector-plate 13 and the male proteotorplate 8 inthe second pile. After a suitable number of piles have been driven inthis manner, a male pro tector-platc being in place in the last piledriven, all of the othcrs-exccpt the end female plate---bcing removed,the space be tween the two plates is filled with concrete. When thespace is properly filled with the concrete, the first pile and thesucceeding piles are then withdrawn, the spreaderbolts proving noserious obstruction, as'thev are easily passed through freshly-mixcdconcrete. On short piles, twenty feet and less in length, thespreader-bolts will not be required. The hinged bottom, as the pile isbeing pulled up. opens by the weight of the concrete bearing on it. Orthe pile may be withdrawn, before filling with the concrete, asutlicient distance to allow the bottom to saving open by gravity.

It will be obvious that reinforcing rods or bars may be placed withinthe pile before concrete is poured in, if found necessary, as-it oftenis in foundation work.

In driving the piles any suitable piledriver may be used, and theordinary lead line running from the engine of the pile driver over theleads can be used to pull up the piles when required.

For constructing circular walls, and turning corners atright angles, thepile used does not differ materially from the rectangular orstraight-pile, except that the sides or channel irons are curved alongtheir longest dimensions, as shown at H and 15, Figs. 7 and 8, and whenused in constructing a circular foundation or wall, four of these pilesare driven in a circle, and after they are driven and the concretepoured in, the piles are pulled up and the concrete allowed to set.after'wliich the circle of earth forming the core can be removed, and ifthe foundation. is to support a heavy structure the hole made by theremoval of the earth may also be filled with concrete. Instead'of ahinged bottom, this form of pile is provided with a detachable platebottom 16, which is provided with upturned lugs 17, which conform to thecurvature of the sides 14: and 15, 'and frictionally engage the same.Then the pile. is pulled up the plate remains in the ground.

Various changes in the detail of construction may be made withoutdeparting from the spirit or scope of my invention, and therefore I donot limit myself to the exact construction herein described.

Having thus fully described my invention what I claim is 1. fr moldforforming concrete structures, comprising oppositely-disposedchannel-irons having their flanges arranged out-- wardly, means forsecuring the irons apart from each oth r, guides formed on one set offlanges, a detachable closure-plate slidable in said guides, and adetachable division-plate slidable in guide-ways, formed in adjacentedges of: the other set of flanges.

2. A mold for forming concrete structures, comprisingoppositely-disposed channel-irons arranged with their flanges extendingout'a'ardly, means forsecuring the irons a distance apart from eachother, hook-shape guide-ways formed on one set of oppositelydisposedflanges, a detachable cl0sureplate slidable in said guide ways, groovedguideways formed in the adjacent edges of the other set of flanges, anda detachable division-plate slidable in said guideways.

3. A mold for forming concrete structures, comprisingoppositcly-disposed channel irons having their flanges arrangedoutwardly, means for securing said irons spaced apart hook-shapeguide-ways formed on one set of flanges a detachable closure plateslidable in said guide-ways, grooved guidewa vs formed in the adjacentedges of the other set of flanges, a detachable divisionplatc slidablein the grooved guideways, and a driving-box ar'anged between the channel-irons so as to leave a pouring-space at each side thereof.

4. A mold for forn'iing concrete structures, comprisingoppositely-disposed channel-irons havingtheir flanges arranged out-.vardl means for securing the channel irons

